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1. (WO2019067084) RADIO FREQUENCY POWER AMPLIFIER



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INTERNATIONAL SEARCH REPORT (ISR)
Part 1:  1  2  3  4  5  6          Part 2:  A  B  C  D  E 
International application No. Applicant's or agent's file reference
PCT/US2018/044516 RTN2-369PWO
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
31 July 2018 28 September 2017
Applicant
RAYTHEON COMPANY
FOR FURTHER ACTION: See Form PCT/ISA/220 as well as, where applicable, item 5 below.
This international search report has been prepared by this International Searching Authority and is transmitted to the applicant according to Article 18. A copy is being transmitted to the International Bureau.
It is also accompanied by a copy of each prior art document cited in this report.
1. Basis of the report
a. With regard to the language, the international search was carried out on the basis of:
the international application in the language in which it was filed.
a translation of the international application into                                          which is the language of a translation furnished for the purposes of international search (Rules 12.3(a) and 23.1(b)).
b.
This international search report has been established taking into account the rectification of an obvious mistake authorized by or notified to this Authority under Rule 91 (Rule 43.6bis(a)).
c.
With regard to any nucleotide and/or amino acid sequence disclosed in the international application, the international search was carried out on the basis of a sequence listing:
2. Certain claims were found unsearchable
3. Unity of invention is lacking
4. Title of the invention
The text is approved as submitted by the applicant.
The text has been established by this Authority to read as follows:
5. Abstract
The text is approved as submitted by the applicant.
The text has been established, according to Rule 38.2, by this Authority as it appears in Box No. IV. The applicant may, within one month from the date of mailing of this international search report, submit comments to this Authority.

An amplifier (10) having a Radio Frequency (RF) power level detector circuit (12) for producing a control signal in accordance with a power level of an RF input signal. The control signal indicates whether the power level of the input signal is within a predetermined range of power levels greater than zero. A bias circuit (16) is fed by the control signal, for producing a fixed bias voltage at a gate electrode of a field effect transistor (FET) to establish a predetermined quiescent current for the FET when the control signal indicates the power level of the RF input signal is within the predetermined range of power levels and to reduce the bias voltage to reduce the predetermined quiescent current when the control signal indicates the power level of the RF input signal is below the predetermined range of power levels.


6. Drawings
a.
The figure of the drawings to be published with the abstract is Figure No.     2    
as suggested by the applicant.
as selected by this Authority, because the applicant failed to suggest a figure.
as selected by this Authority, because this figure better characterizes the invention.
b.
none of the figures is to be published with the abstract.

A. CLASSIFICATION OF SUBJECT MATTER

     H03F 1/02 (2006.01)i; H03F 1/30 (2006.01)i; H03F 3/195 (2006.01)i; H03F 3/24 (2006.01)i; H03F 3/72 (2006.01)i
According to International Patent Classification (IPC) or to both national classification and IPC

B. FIELDS SEARCHED

Minimum documentation searched (classification system followed by classification symbols):
     H03F
Documentation searched other than minimum documentation to the extent that such documents are included in the fields searched:
Electronic data base consulted during the international search (name of data base and, where practicable, search terms used):
EPO-Internal, WPI Data

C. DOCUMENTS CONSIDERED TO BE RELEVANT

Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No.
(1)
X
JP H06303043 A (MITSUBISHI ELECTRIC CORP) 28 October 1994 (1994-10-28)
1-4
paragraphs [0001] - [0033]; figures 1-4
(2)
A
EP 2451075 A1 (NEC CORP [JP]) 09 May 2012 (2012-05-09)
1-4
paragraphs [0002] - [0072]; figures 1-8
(3)
A
US 2009066439 A1 (WHELAN COLIN S [US] ET AL) 12 March 2009 (2009-03-12)
1-4
paragraphs [0002] - [0062]; figures 1-11
*
Special categories of cited documents:
"A"
document defining the general state of the art which is not considered to be of particular relevance
"E"
earlier application or patent but published on or after the international filing date
"L"
document which may throw doubts on priority claim(s) or which is cited to establish the publication date of another citation or other special reason (as specified)
"O"
document referring to an oral disclosure, use, exhibition or other means
"P"
document published prior to the international filing date but later than the priority date claimed
"T"
later document published after the international filing date or priority date and not in conflict with the application but cited to understand the principle or theory underlying the invention
"X"
document of particular relevance; the claimed invention cannot be considered novel or cannot be considered to involve an inventive step when the document is taken alone
"Y"
document of particular relevance; the claimed invention cannot be considered to involve an inventive step when the document is combined with one or more other such documents, such combination being obvious to a person skilled in the art
"&"
document member of the same patent family

D. INFORMATION ON PATENT FAMILY MEMBERS

Patent document cited in search report Publication date
(day/month/year)
Patent family member(s) Publication date
(day/month/year)
JP H06303043 A
28 October 1994
NONE
EP 2451075 A1
09 May 2012
EP 2451075 A1
JP WO2011002099 A1
US 2012098602 A1
WO 2011002099 A1
09 May 2012
13 December 2012
26 April 2012
06 January 2011
US 2009066439 A1
12 March 2009
CN 101796720 A
CN 105305986 A
EP 2203974 A1
JP 5113256 B2
JP 2010538582 A
KR 20100063767 A
PL 2203974 T3
TW 200917646 A
US 2009066439 A1
WO 2009035767 A1
04 August 2010
03 February 2016
07 July 2010
09 January 2013
09 December 2010
11 June 2010
30 November 2017
16 April 2009
12 March 2009
19 March 2009
Name and mailing address of the ISA/:
European Patent Office
P.B. 5818, Patentlaan 2, 2280 HV Rijswijk,
Netherlands
Telephone No. (+31-70)340-2040
Facsimile No. (+31-70)340-3016
Date of the actual completion of the international search:
09 October 2018
Date of mailing of the international search report:
17 October 2018
Authorized officer:
Fedi, Giulio
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